1.最简单的动画(view的移动或者View的缩小与放大)
- (void)viewDidLoad {
[super viewDidLoad];
view4 = [[UIView alloc]initWithFrame:CGRectMake(354, 676, 60, 60)];
view4.backgroundColor = [UIColor yellowColor];
[self.view addSubview:view4];
//准备动画
[UIView beginAnimations:nil context:nil];
//给动画设置时间间隔
[UIView setAnimationDuration:3];
//设置动画的重复次数
[UIView setAnimationRepeatCount:1];
//重复执行的时候，第二次响应相反的效果
//[UIView setAnimationRepeatAutoreverses:YES];
[UIView setAnimationDelegate:self];
//动画开始时，执行方法选择器选择的方法
//[UIView setAnimationWillStartSelector:@selector(willStart)];
[UIView setAnimationDidStopSelector:@selector(didStop)];
view4.frame =CGRectMake(354,0, 60, 60);
//真正开始动画
[UIView commitAnimations];
}
需要注意的地方：必须挂代理，动画开始和结束的方法才会被调用，这里的代理是没有协议的，遵守的是监听动画开始和结束的方法
2.gif动态图片的播放（TOM喝牛奶为例为例）(需要TOM资源的可以简书联系我)
TOM产品
- (void)viewDidLoad {
[super viewDidLoad];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(15, 580, 60, 60);
button.layer.cornerRadius = 25;
[button addTarget:self action:@selector(milk) forControlEvents:UIControlEventTouchUpInside];
[button setImage:[UIImage imageNamed:@"牛奶"] forState:UIControlStateNormal];
button.clipsToBounds = YES;
[self.view addSubview:button];
}
-(void)milk
{
UIImageView *imageView = [[UIImageView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:imageView];
NSMutableArray imagesArray = [NSMutableArray array];
for (int index = 0; index<81; index++)
{
NSString *string = [NSString stringWithFormat:@"eat_%d.jpg",index];
UIImage *image = [UIImage imageNamed:str];
[imagesArray addObject:image];
}
//给iamgeView设置动画图片
imageView.animationImages = imagesArray;
//设置动画时间
imageView.animationDuration = 4;
//设置重复次数
imageView.animationRepeatCount =1; //设置0也表示无数次执行
//让动画开始
[imageView startAnimating];
//让动画结束
//[imageView stopAnimating];
}
需要注意的地方：图片的加载上是一个数组，然后把数组给动画进行播放。获取动态图片可以到百度，输入“gif图片”就可以了，下载下来，打开图片，可以看到是有很多张图片组成，统一进行改名字（便于使用）。
3.利用Block语句进行动画（有关透明度的问题，也是一种动画）
透明度的动画（类似下载的出现与消失）
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(100, 100, 250, 300)];
label.center = self.view.center;
label.backgroundColor = [UIColor redColor];
[self.view addSubview:label];
label.text = @"动画";
label.textAlignment = NSTextAlignmentCenter;
label.layer.cornerRadius = 10;
label.clipsToBounds = YES;
label.alpha = 0;
label.backgroundColor = [UIColor greenColor];
[self.view addSubview:label];
[UIView animateWithDuration:5 animations:^{
label.alpha = 1;
} completion:^(BOOL finished) {
[UIView animateWithDuration:5 animations:^{
label.alpha = 0;
} completion:^(BOOL finished) {
[label removeFromSuperview];
}];
} ];
}
需要注意的地方：block模块方面，它的UIView animateWithDuration:5 animations:^{ label.alpha = 1;} 相当于动画的开始，completion:^(BOOL finished)后面相当于动画的结束。
4.转场动画（其实也就是两个view之间的转换）
#import "ViewController.h"
@interface ViewController ()
{
UIView *view1;
UIView *view2;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
view1 = [[UIView alloc]initWithFrame:self.view.frame];
view1.backgroundColor = [UIColor yellowColor];
[self.view addSubview:view1];
view2 = [[UIView alloc]initWithFrame:self.view.frame];
view2.backgroundColor = [UIColor greenColor];
[self.view addSubview:view2];
}
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
//1.创建一个动画对象(转场动画对象)
CATransition *animation = [CATransition animation];
//2.创建一个代理监听动画的开始与结束
animation.delegate = self;
//3.动画执行时间
animation.duration = 2.0;
//4.设置动画的快慢效果（四种）
/*
UIViewAnimationCurveEaseInOut, // slow at beginning and end
UIViewAnimationCurveEaseIn, // slow at beginning
UIViewAnimationCurveEaseOut, // slow at end
UIViewAnimationCurveLinear
*/
animation.timingFunction = UIViewAnimationCurveEaseInOut;//curve |kɜːv曲线
//5.设置类型
/*
//动画类型说明
公有API
kCATransitionFade 交叉淡化过渡，新视图逐渐显示在屏幕上，旧视图逐渐淡化出视野
kCATransitionMoveIn 新视图移到旧视图上面，好像盖在上面。
kCATransitionPush 新视图将旧视图推出去。
kCATransitionReveal 将旧视图移开显示出下面的新视图。
*/
animation.type = kCATransitionPush;
animation.type = @"cameraIrisHollowClose";//苹果私有的，下面更多详解
//6.设置动画的子类型（动画方向）
/*
*kCATransitionFromRight
*kCATransitionFromLeft
*kCATransitionFromTop
*kCATransitionFromBottom
*/
animation.subtype = kCATransitionFromTop;
//获取到子视图在父视图上的位置
NSInteger indexOfView1 = [self.view.subviews indexOfObject:view1];
NSInteger indexOfView2 = [self.view.subviews indexOfObject:view2];
//在parentView执行动画的时候，调换两个视图的位置，以达到视图切换的效果
[self.view exchangeSubviewAtIndex:indexOfView1 withSubviewAtIndex:indexOfView2];
//7.将转场动画添加到self.view的图层layer
[self.view.layer addAnimation:animation forKey:nil];
}
-(void)animationDidStart:(CAAnimation *)anim
{
NSLog(@"动画开始了");
}
-(void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
{
NSLog(@"动画结束了");
}
@end
需要注意的地方：1.转场动画一定要有一个animation对象，2.type代表的是动画类型，subtype代表的是动画方向，它们的开头都是KCA记住就好了。3.获取到子视图在父视图上的位置 NSInteger indexOfView1 = [self.view.subviews indexOfObject:view1];一定要学会，在交换时不用担心view位置的变化
5.无限轮播动画（图片一直可以滑动，左右一直无线循环）
下面的代码大家可以复制到Xcode里面打开（自己添加几张图片，模拟一下效果）
无限的轮播图片
ViewController.m
无线轮播动画
Created by 王冲 on 16/5/12.
Copyright © 2016年 王冲. All rights reserved.
#import "ViewController.h"
@interface ViewController ()
{
UIImageView *_imageView;
int _currentIndex;
}
@end
@implementation ViewController
#pragma mark 1.**************(添加两个清扫手势，左右)
- (void)viewDidLoad {
[super viewDidLoad];
_imageView = [[UIImageView alloc]initWithFrame:self.view.frame];
_imageView.image = [UIImage imageNamed:@"0.jpg"];
[self.view addSubview:_imageView];
//要想实现左滑和右侧滑动就需要添加手势
UISwipeGestureRecognizer *leftSwipe = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(leftSwipe)];
leftSwipe.direction = UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:leftSwipe];
UISwipeGestureRecognizer *rightSwipe = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(rightSwipe)];
rightSwipe.direction = UISwipeGestureRecognizerDirectionRight;
[self.view addGestureRecognizer:rightSwipe];
}
#pragma mark 2.**************两个手势实现的方法
-(void)leftSwipe
{
[self setTransition:YES];
}
-(void)rightSwipe
{
[self setTransition:NO];
}
#pragma mark 3.**************
//真正实现转场动画
-(void)setTransition:(BOOL)isNext
{
CATransition *animation = [CATransition animation];
animation.duration =0.5; //duration |djʊˈreɪʃn, 持续时间
//设置动画类型type
/*
*动画类型说明(公有API)4种类型
* kCATransitionFade 交叉淡化过渡，新视图逐渐显示在屏幕上，旧视图逐渐淡化出视野
* kCATransitionMoveIn 新视图移到旧视图上面，好像盖在上面。
* kCATransitionPush 新视图将旧视图推出去。
* kCATransitionReveal 将旧视图移开显示出下面的新视图。
*/
animation.type = kCATransitionPush ;
/*
私有API,注意对于苹果官方没公开的动画类型只能使用字符串，并没有对应的常量定义
animation.type = @"cube" //立方体效果
animation.type = @"suckEffect" //收缩效果，如一块布被抽走
animation.type = @"oglFlip" //上下翻转效果
animation.type = @"rippleEffect" //滴水效果
animation.type = @"pageCurl" //向上翻一页
animation.type = @"pageUnCurl" //向下翻一页
animation.type = @“cameralIrisHollowOpen” //摄像头打开效果
animation.type = @“cameraIrisHollowClose” //摄像头关闭效果
*/
//设置动画的子类型subtype（动画方向）4种类型
/*
*kCATransitionFromRight （）
*kCATransitionFromLeft
*kCATransitionFromTop
*kCATransitionFromBottom
*/
if (isNext) {
animation.subtype = kCATransitionFromRight;
}else
{
animation.subtype = kCATransitionFromLeft;
}
//清扫获取下面一张图片
_imageView.image = [self getImage:isNext];
[_imageView.layer addAnimation:animation forKey:nil];
}
#pragma mark 4. **************轻划切换图片
-(UIImage *)getImage:(BOOL)isNext
{
if (isNext) {
_currentIndex = (_currentIndex +1)%3;
}
else
{
_currentIndex = (_currentIndex +2)%3;/
}
NSString *string = [NSString stringWithFormat:@"%d.jpg",_currentIndex];
UIImage *image = [UIImage imageNamed:string];
return image;
}
@end
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